DNA and RNA are key to this puzzle that helps middle schoolers review basic protein synthesis terms like 'codon' and 'enzyme' with clear, simple clues.
Human Circulatory System Crossword Puzzle for Middle School is a medium crossword puzzle with 16 clues covering . Play it online for free below, or create your own crossword with our free crossword maker.
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Human Circulatory System Crossword Puzzle for Middle School
Explore the human circulatory system with this medium-difficulty crossword puzzle designed for grades 6-8. Test knowledge on key parts and functions of blood circulation.
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Across
- 1. Protein in red blood cells that carries oxygen
- 5. Upper chamber of the heart that receives blood
- 7. Tiny blood vessels where exchange of gases occurs
- 8. Small branch of an artery leading to capillaries
- 10. Gas carried by red blood cells to body tissues
- 11. Main organ that pumps blood throughout the body
- 14. Blood vessel that returns blood to the heart
Down
- 2. Rhythmic expansion of arteries caused by heartbeat
- 3. Fluid that carries oxygen and nutrients in the body
- 4. Liquid part of blood that carries cells and substances
- 6. Process of blood moving through the body
- 9. Lower chamber of the heart that pumps blood out
- 12. Small vessel that carries blood from capillaries to veins
- 13. Structure that prevents blood from flowing backward
- 15. Blood cell that helps with clotting and healing
- 16. Vessel that carries blood away from the heart
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